Those differences, according to fracking opponent and Environment N.C. Director Elizabeth Ouzts, include stripping the legislation of language allowing the injection of fracking waste underground. The House version also removes a provision booting environmental and geological experts from the regulatory Mining and Energy Commission, the panel tasked with preparing the state's regulatory structure for drilling.

The bill's key point—authorizing the N.C. Department of Environment and Natural Resources to issue fracking permits in March 2015—remains, although with the addendum that permits will require another legislative vote for them to take effect, Ouzts said.

"It is much better than the Senate version," Ouzts said. "But it is still bad for water quality, and it breaks the promise that the legislature made last year that they would allow the Mining and Energy Commission to develop rules before setting a date for permits to be issued."